That comment was not really funny at all...
Just because someone is a conservative doesn't make them stupid or a racist. There are racist in both side of the political spectrum.
Also, If you take a look at the #OWS crowd you will see a lot of stupidity (Crapping on police car, berating lawenforcement officials etc) and one could infer that they are the DNC's base based on who is supplying them money eg George Soros.